As always, I feel if you can avoid shooting someone, you should do just that.

But each situation is different.

If the guy was just running away, just let him go. But, in this case, he essentially is running around and shooting randomly (albeit in a specific direction). If I saw just this action I feel I would have a justification to use deadly force.

".. a government and its agents are under no general duty to provide public services, such as police protection, to any particular individual citizen..." - Warren v. District of Columbia, 444 A.2d 1 (D.C. App.181)